Eyeglass frame



fr. F. PuRcELL EYEGLASS FRAME Filed oct. 27, 1922 INVENTOR. Z-/OMAJPURCELL.

A TTORNE Y.

Patented 0st. 23, 1924.

NITED STATES PATENT ori A THOMAS F. PURCELL, OF NEW YORK, N. Y.

EYEGLAVSS FRAME.

Application filed October 27, 1922. Serial No. 597,310.`

To all whom it may concern.'

Be it known that I, THOMAS F. PUncnLL, a citizen of the United States,residing at New York, in the county of New York and.

f the provision of a lens frame or mounting wherein the lenses may beeasily removed or replaced by hand and simultaneously clamped inposition so that a single `frame can be utilized for lenses havingdifferenty focal lengths.

Another and equally important object of my invention is the provision ofa lens mounting or frame wherein the parts are extremely simple inconstruction, easily assembled, highly eiicient in operation and use,practical, durable, and otherwise capable of being manufactured at anextremely low cost whereby its commercial possibilities are greatlyenhanced. y

I accomplish the above objects and others which will become moreapparent as the description proceeds and when taken in con- L advantages`of* a lens mounting of this charnection with the accompanying drawings,

showing a preferred embodiment of my invention, wherein:

Figure l is a rear view of a lens frame showing my invention.

Figure 2 is an enlarged plan taken substantially on the line 2-2 ofFigure 1.

Figure 3 is a detailed view of the clamping device for the lens.

Referring now to the drawings, wherein like reference charactersdesignate corresponding parts throughout the several views, 5 designatesthe conventional U- shaped nose piece of a lens frame and Gthe lenses tobe mounted therein, `according to the manner now to be described. Asplit rim designated by numeral 7 is formed with an upstanding aperturedear 8, the opposite end of the rim 7 being provided with a tapped tubeor enlargement 9, the bottom 10 of which is curvilinear to conform ltothe shape of -the said rim. The tapped tube is internally threaded at 11and receives the ends of a-connectingk rodk 12 which rod is providedwith a flat linger hold 13 substantially intermediate the ends thereofand directly above the nosepiece 5,. The respective endsof the rod 12are pro-vided with rightand left hand threads lil, 15, respectivelywhereby upon rotation o'lf the rod by the finger hold, the ends of therim 7 may be brought together to clamp the respective lenses 6simultaneously and with the same degree of pressure. f

The rod 12 is also provided with a washer or enlargement 16 which bearsagainst the apertured member 8y through which the threaded portion ofthe rod extends so that 'upon rotationof said rod, the respective ears 8will be brought into engagement with the inner ends of the tapped member9.

By reason of this construction it will also be seen that a mountingandirame of this character is adapted to accommodate lenses lofidifferent diameters in which instance, a

slight space will remain between the ears and the tapped tubes yet/willproperly clamp the respective lenses securely in their proper position.This construction aiiords the use of a lens mounting for dierent sizesas well as lenses of different focal lengths since` the respectivelenses may be easily removed and replaced without the aid of specializedtools and appliances and avoids the expensive optical work incident to`replacing broken lenses. Many other acter will readily suggestthemselves in ac-V y cordance with the above description. f

While I have illustrated and described my invention Vwith some degreeofparticu` I claim as new' and desire to secure byV Y*UnitedStatesrLetters Patent is :--k f 1. A lens Vframe of' he class describedin combination with a nose piece, comprising a pairy of split lens rims,a connecting rod between the rims and above lthe nose piece and meansdisposed on said rod cooperating with the Vsplit, rims whereb-yY thelatter maykv be contracted or expanded; Y

nog'

2.- A lens frame of the class described in combination With a nose piececomprising a pair of split lens rims, an apertnred member formed Withone end of each rim and a threaded tubular member formed on the oppositeend of each rim and a rod threaded at each end cooperating with thethreaded tubular member to contract or expand said rims with respect to`the lenses.

3. A lens frame of theclass described in combination with a nose piece,comprising a pair of split lens rims, an npstanding` apertured memberformed With one end of each rim, internally tl.1readed,rtubnlar membersformed on the opposite end of each riin, a connecting rod extendingthrough each of the apertnred members into the tubular members, rightand left hand threads on the ends of the rod cooperating with theinternally threaded members to contract and expand the saine, and aflattened nger hold intermediate fthe ends ol the rod for rotating thelatter.

In testimony whereof I affix my signature in presence of two Witnesses-THOMAS F. PURCELL. [L si] Witnesses:

BENJAMIN Govnz, I HENRY H; RArHInn.

